When choosing which version of the djbdns package to use, you have to determine if you need ipv6 transport support. The ipv4-only version does not contain the ipv6 patch because it would be a nightmare to combine the huge ipv6 patch with the other applied patches. Also, the ipv4-only version also install the command line tools included with the djbdns tarball, which the ipv6 version does not, but that could be easily fixed by modifying the PKGBUILD file.

After installation, the package will display some final instructions on how to get your dnscache or tinydns installation running.

>>> Configure and run dnscache:
dnscache-conf dnscache dnslog /etc/dnscache [myip]
ln -s /etc/dnscache /service
>>> Configure and run tinydns:
tinydns-conf tinydns dnslog /etc/tinydns [myip]
ln -s /etc/tinydns /service
Note: Change myip to your public ip. If [myip] omitted dnscache will run on localhost.
More help can be found at http://cr.yp.to/djbdns.html